Propylene Glycol (PG)

Propylene glycol creats more throat hit and more flavor, it is a little bit sweet. Some users are sensitive or allergic to PG and use VG instead.

Vegetable Glycerin ( VG)

Glycerol gives a better amount of vapor. It is thicker than PG.

It is recommended that you only use USP(US Pharmacopoeia-Grade) approved propylene glycol and glycerin. Our PG and VG base are USP grade, click it 
to check out!